PREFIX :      <undefined:>
PREFIX foaf:  <http://xmlns.com/foaf/0.1/>
PREFIX graph: <graphdata:name:>
PREFIX owl:   <http://www.w3.org/2002/07/owl#>
PREFIX vann:  <http://purl.org/vocab/vann/>

WITH graph:dokk
INSERT
{
    []  a :prefix ;
        vann:preferredNamespacePrefix ?prefix ;
        vann:preferredNamespaceUri ?uri .
}
WHERE
{
    GRAPH graph:prefixcc
    {
        []  a owl:Ontology ;
            vann:preferredNamespacePrefix ?prefix ;
            vann:preferredNamespaceUri ?uri .
    }
}
